Answer:
(Fatwa: 832/661/B=1431)
In is not lawful to drink the milk of woman after the childhood, rather it is haram and an act of sin. There is no kaffarah (expiation), just do tauba and istighfar extensively.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
